Yamaha YSP-3000 Service Manual page 86

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A
B
C
YSP-3000/YSP-30D/HTY-7030
POWER 2/2
1
2
3
W801
Page
81
J2
to INPUT_CB8
4
0
0
0
0
5
6
7
3.3
-29.8
8
-29.7
9
POWER (2)
# All voltages are measured with a 10MΩ/V DC electronic voltmeter.
# Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
10
86
D
E
F
5.5
IC801
5.5
0
0
JK802
5.5
IC801
5.5
11.1
5.5
4.8
JK801
11.1
IC802
4.8
4.8
5.1
2.8
0
IC802
2.8
0
4.8
POWER (4)
-31.9
-29.8
-19.9
-29.8
-18.1
-15.9
-25.9
-27.7
DRIVER
-25.8
-19.9
-25.9
-19.9
-21.9
-19.5
IC901
-25.1
-15.6
-24.0
3.3
-16.1
1.6
1.6
3.3
3.3
-23.9
-25.9
0
-29.8
-29.8
0
3.3
-29.6
-29.6
-29.8
3.3
-29.8
3.3
G
H
I
W951
IC951
W952
POWER (5)
(B model)
-32.1
3.3
3.3
3.3
-19.5
-26.8
12.0
-15.6
-19.5
4.9
-15.6
-19.4
-19.3
5.2
5.2
4.9
4.9
0
0
3.3
3.3
-29.8
-27.7
-29.5
-27.5
IC801, 802: NJM2068MD-TE2
Dual operational amplifier
OUT
1
8
+V
1
CC
–IN
2
7
OUT
2
1
+ –
+ –
+IN
1
3
6
-IN
2
4
5
+IN
–V
CC
2
J
K
L
IC953
CB951
IC952
W901
CB902
0.2
W991
CB903
3.3
3.3
3.3
3.3
IC902
0
IC902: TC7SH08F
IC951: PQ012FZ01ZPH
2-input AND gate
Voltage regulator
DC input
DC output
IN B
1
5
V
CC
1
3
(Vin)
(Vo)
A
B
Y
L
L
L
IN A
2
Specific IC
L
H
L
Bias power supply
ON/OFF control
2
4
H
L
L
(VB)
(Vc)
GND
3
4
OUT Y
5
H
H
H
GND
M
N
POWER (3)
IC901: M66003-0131FP-R
18 digit 5 x 7 segment VFD controller/driver
Display code
CGROM
RAM
(35-bit x 166)
44
SEG00
(8-bit x 60)
Segment
19
SEG25
Code
write
output
17
SEG26
circuit
CGROM
SEG34
CS
2
Serial
dot data
(35-bit x 16)
9
data
write
SCK
3
receive
Code/
SDATA
4
circuit
command
45
SEG35
control
circuit
DIG11/
52
SEG42
DIG12/
51
SEG41
Segment/
code
DIG13/
Digit
50
select
SEG40
select/
DIG14/
49
XIN
7
Clock
output
SEG39
timing
Display
generator
clock
controller
scan pulse
circuit
48
DIG15/
XOUT
6
SEG38
DIG16/
47
SEG37
DIG17/
46
SEG36
DIG00
63
Digit
RESET
1
output
circuit
Vcc1
8
53
DIG10
Vcc2
18
Vss
5
Vp
64

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